Camden Police tweeted a map of the area where police have been issued with stop and search powersCredit: Camden Police

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A car is checked within the London cordon

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Detectives and a forensic specialist at the sceneCredit: Jamie Lorriman

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Specialists examine the cordoned off areaCredit: Jamie Lorriman

The Camden Night Time Economy Team B arrested a male last night for attempting to enter a club with this nasty knife. The male then tried to escape before being detained and arrested. This morning he was charged and sent to court. Another knife off the street. #KeepingCamdenSafe. pic.twitter.com/pk30WbXXmz